diff --git a/tests/riscof/spike/spike_rv32gc_isa.yaml b/tests/riscof/spike/spike_rv32gc_isa.yaml
index 05fc6f60..3438e17a 100644
--- a/tests/riscof/spike/spike_rv32gc_isa.yaml
+++ b/tests/riscof/spike/spike_rv32gc_isa.yaml
@@ -1,6 +1,5 @@
 hart_ids: [0]
 hart0:
-  #ISA: RV32IMAFDCZicsr_Zifencei
   ISA: RV32IMAFDCZicsr_Zifencei_Zba_Zbb_Zbc_Zbs
   physical_addr_sz: 32
   User_Spec_Version: '2.3'
diff --git a/tests/riscof/spike/spike_rv64gc_isa.yaml b/tests/riscof/spike/spike_rv64gc_isa.yaml
index e6bfc72e..a8837ac7 100644
--- a/tests/riscof/spike/spike_rv64gc_isa.yaml
+++ b/tests/riscof/spike/spike_rv64gc_isa.yaml
@@ -1,6 +1,5 @@
 hart_ids: [0]
 hart0:
-#  ISA: RV64IMAFDCSUZicsr_Zifencei
   ISA: RV64IMAFDCSUZicsr_Zifencei_Zba_Zbb_Zbc_Zbs
   physical_addr_sz: 56
   User_Spec_Version: '2.3'